How to stop a slow drip??

[Ramesh]

I am after the best solution, a method or technique to stop a pvc pipe dripping. I noticed yesterday a small drip coming from a join in my sump plumbing and tried to fix it unsuccessfuly.
The pvc pipe is joined using pressure pipe plumping sealant so I dried it off and applied more to the outside but the drip remains although the leak is very small know.
This is the first time I have encountered this problem when I have used this sealant.

Any ideas about how to stop this slow drip??
I don't want to redo the plumbing to the sump.

 

[Chromobotia]

When setting up my 500, I had some persistent leaks. I put plumbing putty on the threads, wrapped some soft plastic tape (the name of it isn't coming to mind) around the threads followed by some more plumbing putty. I screwed the joint back together and problem was solved.

If you have a threaded joint, I would apply more sealant to the thread and give it another try. I think trying to make a seal on the outside is not the way to go.

GL.

 

[Camshaft Ramrod]

Is it a pipe with pressure?
If it were me, and sealing over the top of it over and over didnt work, I would cut out the section and redo it.

Better safe than sorry. If it is possible to redo it, redo it. I'm not one to use puddy or prayers.

edit/ Also, if it was a reeeally slow drip, and it were a freshly set up tank, you could wait a day or so. They tend to seal themselves up eventually. That is sloooow drips. I've done that once.

 

[gomezladdams]

Duct tape!
Kidding,although it might work.If ts still leaking after trying to reglue it Id replace it.

 

[Pharaoh]

If it doesn't stop within a day or so, I would pull it apart and redo the connection.

 

[marlong]

use teflon tape and duct tape even if it was initially invented for 'Ducts' it doesnt work well. but teflon works great even for gases. so clean the threads of the piping appy teflon tape in a way not to unwind while screwing the parts together and you should be fine

 

[nfored]

Yes I agree.

I have tried patching many many times and it almost never works out.

I am in a situation now where the new water line I ran has a slow drip. However its only drips if I turn it full blast; it will be a real PITA to cut off the 90 that's leaking due to the location and the layout of the pipe. So I know the temptation to try and spot fix it.

 

[kallmond]

Is it in a glue joint or a threaded joint?

If its a glue joint and its a very small leak.. Sharpen a #2 pencil until its VERY pointy. Push the point firmly into the hole. The graphite will plug the hole for long enough for a top-coat of pvc glue to dry.

 

[Camshaft Ramrod]

^Freakin' McGuyver over here...

 

[Ramesh]

I have slowed the leak to a few small drops over 12hrs but once I build my pond for my gar I will redo the overflow plumbing. As for now it may plug up by itself but I do want peace of mind also.
The leak is not on the overflow pictured it's on the RHS but you can see the setup and why draining the tank is the best way to have a dry joint.
The leak is coming from a section of pipe that was primed and glued so I am really suprised it's leaking.
It looks like I am going to have to unscrew the whole overflow upright assembly and redo a new section.
Can you undo pvc sections that have been welded together??

A quick edit note: The water seen in the pic was from the me due to my 30" gar eying off my arm as I was unscrewing the strainer. The leak is coming from the area just above the black U bend which is a threaded section.